生物環境調節
Online ISSN : 2185-1018
Print ISSN : 0582-4087
ISSN-L : 0582-4087
27 巻, 4 号
選択された号の論文の7件中1~7を表示しています
  • テワリ P.D., ラビクマール G.
    1989 年 27 巻 4 号 p. 105-111
    発行日: 1989/12/31
    公開日: 2010/06/22
    ジャーナル フリー
    亜熱帯域にすんでいるイエスズメが, 恒暗および恒明環境に200日から240日, また亜熱帯域の自然日長, 8L: 16Dの短日, または15L: 9Dの長日環境に280日間おかれ, それらのグループの生殖腺 (卵巣) の発達の日長依存性が調べられた.その結果, 恒明と長日環境には反応して卵巣の発達がみられたが, 恒暗, 短日環境には反応せず, 卵巣の発達はみられなかった.また, 自然日長のもとでは, 卵巣の発達は認められなかったが, 夏の日長にもどしたら卵巣の反応がみられるようになった.
    これらの結果から, 日長差の少ない亜熱帯域にすみついているイエスズメも, 生殖腺の発達が日長依存性を維持していることが判明した.
  • 土屋 照二
    1989 年 27 巻 4 号 p. 113-118
    発行日: 1989/12/31
    公開日: 2010/06/22
    ジャーナル フリー
    To maintain the bulbs or rootstocks at low temperature, those of Lilium×elegans Thunb. cv.‘Benisugata’and‘Connecticut King’, Lilium×formolongi hort, cv.‘Hakuho’and the blazing-star Liatris sp. cv.‘Kouki’were stored in snow occupying a chamber made of 10 cm thick polystyrene panels, from 10 January to 10 May 1988. Some of the snow still remained at the end of storage. Bulb temperature varied from 0 to -0.2°C during storage, but rose to 0.6°C toward the end of the period. The leaf number of the plants increased, but no flower-buds appeared during storage.
    Lilies and the blazing-star planted on 25 November, 1987 as a control sprouted in late March to middle April and flowered in middle June to early July. However, those planted on 10 May 1988 following storage sprouted in middle May and flowered in early July to early August. The storage caused a decrease in the stem length and node number of‘Hakuho, ’‘Kouki’and‘Connecticut King.’This may have been due to the early initiation of flower-buds at high temperature following planting.
  • 西岡 守, 山崎 仲道
    1989 年 27 巻 4 号 p. 119-123
    発行日: 1989/12/31
    公開日: 2010/06/22
    ジャーナル フリー
    When the night soil is used as the manure for planktons in seawater, decomposition ratio of night soil has greatly effect upon multiplication ratio of planktons. Two of seawater for culture medium, one high nutritive value, the other low nutritive value, were adopted in this study. Several night soils with different composition ratio were added into the seawater, and numbers of planktons (diatom, other unicellular algaes, dinocontae, and other zooplankton) were measured.
    The night soil with the high decomposition ratio was effective on the multiplication of various planktons, especially for diatom or dinocontae. Most of diatoms appeared in the first half of the cultivation period, and most of dinocontaes appeared in the latter half of that period. When the night soil with high decomposition ratio was added into the seawater, phytoplankton early appeared in comparison with the addition of the night soil of low decomposition ratio. Accordingly, it can be said phytoplankton take the decomposed products of night soil as a bait. The multiplication ratio of plankton was changed by difference of the seawater. The fact suggested that effect of decomposition ratio on multiplication ratio depended on the concentration of nutritive value in seawater.
  • 鈴木 善弘
    1989 年 27 巻 4 号 p. 125-136
    発行日: 1989/12/31
    公開日: 2010/06/22
    ジャーナル フリー
    Grand Rapidsレタス種子の発芽に及ぼす赤色光 (red light) , 遠赤色光 (far-red light) による光可逆的反応は, 発芽温度のみならずageの進行によっておこる種子の生理的状態によって著しく異なり, 非休眠過程の種子よりも, 休眠および発芽力消失過程の種子においてより明らかである.
    遠赤色光 (far-red light) を長時間照射した種子, あるいは高温 (40℃) で48時間処理した種子は, 照射しない種子あるいは高温処理を行わない種子より発芽速度の低下もおそく, 発芽能力が長く保持される.
    光可逆性を失った非休眠種子の発芽に対する長時間の遠赤色光 (far-red light) 照射による光可逆性の再誘導は光による二次休眠の誘導であるが, 高温処理による光可逆性の再誘導は非休眠種子を異なった二つの生理的状態へ誘導する.その一つは, 48時間の高温 (40℃) 処理による二次休眠の誘導であり, 他の一つは144時間の高温 (40℃) 処理による発芽力の消失過程への誘導である.
    高温処理によって誘導された発芽力消失の生理的状態にある種子の発芽に対するGA3の効果は赤色光 (redlight) より大きい.
  • 光強度に対する光合成速度とNO3-吸収のシステム同定
    森本 哲夫, 福山 寿雄, 橋本 康
    1989 年 27 巻 4 号 p. 137-143
    発行日: 1989/12/31
    公開日: 2010/06/22
    ジャーナル フリー
    To establish the optimal environmental control in hydroponics, we measured the diurnal courses of net CO2 uptake and NO3- consumption of tomato plant cultivated in nutrient film culture and then tried to make the dynamic models of these physiological processes as affected by light intensity based on system identification. Furthermore, online identification was applied to these processes.
    Two types of dynamic models which are the linear model obtained by the method of least squares and the nonlinear model obtained by the GMDH (Group Method of Data Handling) were used in the identification.
    Using the nonlinear model, we could identify the processes of net CO2 uptake and NO3- consumption as affected by light intensity with satisfactory results. On the other hand, using the linear model in the process of NO3- consumption to light intensity increased the mean square error between the calculated and the observed responses. In the process of net CO2 uptake to light intensity, however, we could identify using the linear model with satisfactory results. This implies that online identification based on a linear model is effective to the process of net CO2 uptake as affected by the light intensity from the view of efficient identification.
  • 中西 美一, 内田 徹
    1989 年 27 巻 4 号 p. 145-147
    発行日: 1989/12/31
    公開日: 2010/06/22
    ジャーナル フリー
    We are going to develop a stand-alone computer integrated cultivation support system.
    It has three special functions in contrast to usual environmental control system. Those functions are environmental control planning, interactive man-machine interface and diagnosis of environmental control machines.
    This system is composed of powerful microcomputer unit, measurement unit, control unit, signal conditioning units for various sensors, system program and five application programs.
  • 第27巻 (1989)
    1989 年 27 巻 4 号 p. 155-158
    発行日: 1989/12/31
    公開日: 2010/06/22
    ジャーナル フリー
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